Get notified when FISN files again. Create a free account and we'll email you the moment its next filing is analyzed.

Get filing alerts

Red Flags Detected

  • Going Concern (new) — The auditor has issued a going-concern opinion, and the company states its cash will not fund operations for the next twelve months.
  • Material Weakness (new) — The company discloses material weaknesses in internal control over financial reporting, leading to restatements of prior financial statements.
  • Unproven Technology (new) — The Gravity Reactor is in development and has not been proven in a real-world operating environment, with no NRC license precedent.
  • Pending Litigation Against Nrc (new) — The company is a plaintiff in a federal lawsuit against its own regulator, which could increase scrutiny and delay approvals.
  • Capital Requirements (new) — The company estimates it needs $136M in additional capital to complete its first commercial reactor, far exceeding the offering proceeds.
FISN FISN S-1/A

Deep Fission files for IPO, plans to raise $42.5M at $17/share midpoint; company nets $35.2M

Filed June 10, 2026 · ~2 min read

Key Changes

  • high

    Deep Fission plans to offer 2.5M shares at a preliminary $17.00/share midpoint, raising $42.5M gross; net proceeds to the company are $35.2M.

    The Offering verify on EDGAR →
  • high

    The company is pre-revenue with its Gravity Reactor in conceptual/early engineering stages; it has never built or operated a commercial reactor.

    Prospectus Summary verify on EDGAR →
  • high

    Net proceeds will fund working capital and the first pilot nuclear reactor, including engineering, R&D, licensing, and construction.

    Use of Proceeds verify on EDGAR →

5 more material changes behind this preview — plus the full narrative summary, section-by-section diffs against the prior filing, and verbatim quotes with EDGAR citations.

Read 3 full reports/month free No card required. Takes 30 seconds.

Want to see a complete report first? Today's free report (PURR 10-K) is open in full — no account needed.

Partner

Trade FISN commission-free

Open an account, get a free stock.

Sign up

Investing involves risk. Free stock terms apply.

Was this report useful?

Figures/quotes linked to EDGAR · Narrative written by AI · Aug 30, 2026 · How we verify